{"product_id":"dorman-m630889-brake-master-cylinder","title":"Dorman M630889 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Kia Optima\u003c\/h2\u003e\u003cp\u003eThe Dorman M630889 brake master cylinder is designed specifically for Kia Optima models, providing precise hydraulic control for your vehicle's braking system. This cast iron master cylinder includes a removable reservoir and integrated sensor to ensure consistent performance and safety.\u003c\/p\u003e\u003ch2\u003eKey Features of the Dorman M630889 Brake Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 0.9375 inches for accurate hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eDurable cast iron construction for long-lasting strength\u003c\/li\u003e\n\u003cli\u003eIncludes a removable reservoir for easy maintenance\u003c\/li\u003e\n\u003cli\u003eEquipped with a sensor to monitor brake fluid levels\u003c\/li\u003e\n\u003cli\u003eTwo outlets with M12 x 1.0 thread pitch for secure connections\u003c\/li\u003e\n\u003cli\u003eCompatible with Kia Optima brake hydraulics systems\u003c\/li\u003e\n\u003cli\u003ePackage contains the master cylinder unit (mounting hardware not included)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M630889 brake master cylinder is engineered to meet the specific hydraulic requirements of Kia Optima vehicles. Its 0.9375-inch bore diameter ensures proper fluid displacement, while the cast iron material offers durability under high-pressure braking conditions. The included removable reservoir simplifies brake fluid inspection and replacement, and the integrated sensor provides real-time monitoring of fluid levels to help maintain optimal brake system performance. With two outlets featuring M12 x 1.0 thread pitch, this master cylinder ensures secure and leak-free connections to the brake lines.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Brake Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake pedal sinking or sponginess due to master cylinder wear\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks from damaged or corroded master cylinder components\u003c\/li\u003e\n\u003cli\u003eInconsistent brake pressure affecting stopping performance\u003c\/li\u003e\n\u003cli\u003eWarning lights triggered by faulty brake fluid level sensors\u003c\/li\u003e\n\u003cli\u003eReservoir damage or difficulty in fluid maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with Kia Optima models before installation\u003c\/li\u003e\n\u003cli\u003eBleed the brake system thoroughly after installation to remove air\u003c\/li\u003e\n\u003cli\u003eUse proper tools for M12 x 1.0 outlet fittings to avoid thread damage\u003c\/li\u003e\n\u003cli\u003eCheck sensor connections for secure fit and proper function\u003c\/li\u003e\n\u003cli\u003eMounting hardware is not included; reuse existing hardware or source separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M630889 brake master cylinder to meet or exceed OEM specifications for Kia Optima vehicles. The cast iron construction and integrated sensor are tested for durability and reliability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to ensure customer confidence in product quality.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792423911605,"sku":"BKKX-M630889","price":140.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M630889_Fro.jpg?v=1774997779","url":"https:\/\/www.partcatalog.com\/products\/dorman-m630889-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}